How to use regex with ansible file module

I have the below file module that touches a file on remote hosts.

 - name: create file
   file:
     path: "/oracle/{{ inventory_hostname }}/del.tmp"
     state: touch
   register: direxists

 - fail:
     msg: "Directory missing"
   when: direxists.changed == False

The issue is on the target hosts I may have /oracle or /Oracle folder. The letter 'o' could be case insensitive. Thus, I wanted the regex to work

 path: "/[Oo]racle/{{ inventory_hostname }}/del.tmp"

But unfortunately, such regex is not supported by the file module.

I will have to fall back to shell module & use Unix commands instead; which I was not wanting.

I wish to fail the play if both /Oracle or /oracle directories are missing. If anyone of the [Oo]racle directory exists my play should not fail.

How can I achieve this requirement?

Solution

Find the directory. Fail if none is found. Create the link with the case of the first letter switched. This way both /Oracle and /oracle would exist and point to the same directory.

    - find:
        paths: /
        patterns: '[oO]racle'
        file_type: directory
      register: result

    - fail:
        msg: Directory is missing. Play failed.
      when: result.matched == 0

    - set_fact:
        mylink: "{{ mydir[0] ~ myswitch[mydir[1]] ~  mydir[2:] }}"
      vars:
        mydir: "{{ result.files.0.path }}"
        myswitch:
          o: O
          O: o

    - file:
        state: link
        src: "{{ result.files.0.path }}"
        dest: "{{  mylink }}"

^{Example of a complete playbook for testing arbitrary path
- hosts: localhost

vars:

mypath: /tmp/ansible/
mydir: "{{ result.files.0.path|basename }}"
myswitch:
o: O
O: o
mylink: "{{ myswitch[mydir.0] ~ mydir[1:] }}"

tasks:

- find:
paths: "{{ mypath }}"
patterns: '[oO]racle'
file_type: directory
register: result

- fail:
msg: Directory is missing. Play failed.
when: result.matched == 0

- file:
state: link
src: "{{ result.files.0.path }}"
dest: "{{ mypath ~ mylink }}"

For example, given the directory
shell> tree /tmp/ansible/
/tmp/ansible/
└── Oracle

The play creates a link
shell> tree /tmp/ansible/
/tmp/ansible/
├── oracle -> /tmp/ansible/Oracle
└── Oracle}